Side-by-side comparison

Paula's Choice C15 Super Booster vs SkinCeuticals Phloretin CF

Both are serums built on the same key active: Vitamin C. That makes them genuine alternatives, so price, texture and the supporting ingredients decide it.

2Shared hero actives

Paula's Choice

C15 Super Booster

SerumPremiumMorning only

Dark SpotsAgingDullnessSensitive skinDamaged barrier

15% L-ascorbic acid with vitamin E and ferulic acid — the classic CE Ferulic-style antioxidant trio at a slightly lower price. Small bottle is deliberate: L-AA oxidises once air-exposed, so smaller packaging keeps potency up.

Full analysis →Find dupes →

SkinCeuticals

Phloretin CF

SerumLuxuryMorning only

Photoaging PreventionDark SpotsDullness

A daytime antioxidant serum with 10% vitamin C, phloretin and ferulic acid, the oily/combination-skin sibling to C E Ferulic. Strong environmental defence and tone support; a luxury-priced clinical antioxidant.

Full analysis →Find dupes →

The verdict

Which should you choose?

Both formulas lean on Vitamin C, so for the ingredient doing the work they're close alternatives. Paula's Choice C15 Super Booster is the better fit for signs of aging; SkinCeuticals Phloretin CF for preventing sun damage. On price, Paula's Choice C15 Super Booster is the less expensive option (Premium versus Luxury).

The overlap

What they share

These hero actives appear in both formulas:

Vitamin CFerulic Acid

The formulation

Ingredient stacks, side by side

Paula's Choice C15 Super Booster — top of the list

Water~50–80%
Ethoxydiglycol~5–25%
Ascorbic Acid15%
Glycerin~2–6%
Propylene Glycol~1.5–4%

SkinCeuticals Phloretin CF — top of the list

Aqua~50–80%
Ascorbic Acid~5–25%
Propylene Glycol~3–10%
Phloretin~2–6%
Ferulic Acid~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

	Paula's Choice C15 Super Booster	SkinCeuticals Phloretin CF
Category	Serum	Serum
Price tier	Premium	Luxury
Best for	Dark Spots, Aging, Dullness	Photoaging Prevention, Dark Spots, Dullness
Usage notes	Morning only	Morning only
Shared hero actives	Vitamin C and Ferulic Acid

Questions

Common questions

Is the Paula's Choice C15 Super Booster or the SkinCeuticals Phloretin CF better?

Neither is clearly better on ingredients, since both rely on Vitamin C. Choose on price, texture and how your skin responds to the rest of the formula.

What's the difference between the Paula's Choice C15 Super Booster and the SkinCeuticals Phloretin CF?

Paula's Choice C15 Super Booster's hero actives are Vitamin C, Vitamin E and Ferulic Acid. SkinCeuticals Phloretin CF's are Vitamin C, Phloretin and Ferulic Acid. They also sit in different price tiers (Premium versus Luxury).

Are the Paula's Choice C15 Super Booster and SkinCeuticals Phloretin CF dupes for each other?

Yes, on the ingredient that matters. Both are built around Vitamin C, though concentrations, texture and the supporting ingredients can still differ.

Can I use the Paula's Choice C15 Super Booster and SkinCeuticals Phloretin CF together?

Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.

Keep comparing

Related comparisons

Want a deeper, personalised read? Drop both products into the live comparison tool for an ingredient-by-ingredient breakdown tuned to your skin profile.

Compare these yourself →